Abstract:
The present invention provides a method for transmitting and receiving image data at a high speed and a device for implementing the method, wherein the method comprises the steps of: sequentially transmitting image data, which is outputted from an image sensor, through one or more transmission channels at a speed that is suitable for bandwidths of the transmission channels; and sequentially recording, in a frame store, the image data that is received through the one or more transmission channels at a speed which corresponds to the entire bandwidth that has been formed by adding up the bandwidths of each of the one or more transmission channels.
Abstract:
An ultra-high-strength steel wire rod having excellent resistance to delayed fracture includes, by wt%, 0.7-1.2% C, 0.25-0.5% Si, 0.5-0.8% Mn, 0.02-0.1% V and a balance of Fe and inevitable impurities.
Abstract:
Disclosed is a semiconductor package sorting method for improving sorting speed and yield of semiconductor packages. The method comprises performing a vision inspection on a tray, transferring the tray to a buffer unit, shifting defective products to a defective product tray, performing a vision inspection on a tray, transferring the tray to an unloading unit, determining whether defective products are found among semiconductor packages, if it is determined that the unloading tray receives defective products, shifting the defective products to the defective product tray and shifting normal products to fill the unloading tray, if a vision inspection for a last tray of a lot is completed, shifting the defective products to the defective product tray, discharging the defective product tray into a defective product storage unit, and if the re-inspection is determined, performing a defective product re-inspection simultaneously with arrangement of the normal products.
Abstract:
A method for inspecting a semiconductor device is disclosed, which increases the accuracy of an external- defect inspection capable of determining whether balls or PCBs (Printed Circuit Boards) of the semiconductor device have external defects. The method for inspecting the semiconductor device to determine whether a defect occurs in a ball grid array contained in a PCB via an image captured by a camera includes the steps of: a) capturing an image of the semiconductor device to allow a circumference of each ball contained in the semiconductor device to be displayed in white, and acquiring falling-illumination image information from the captured image; b) capturing an image of the semiconductor device to allow a center part of each ball contained in the semiconductor device to be displayed in white, and acquiring coaxial image information from the captured image; c) subtracting the coaxial image information from the falling-illumination image information, and acquiring ring-shaped image information; and d) comparing the ring- shaped image information with reference image information, and determining whether the ball is defective according to the comparison result.
Abstract:
Disclosed are a method and apparatus for simultaneously inspecting and packaging chips, the method comprising a first step for advancing a film having a plurality of chip receiving recesses thereon from a film supplying roll to a film recovery roll by a step movement, inserting an uninspected chip into the chip receiving recess of the film, inspecting the chip passing under a three dimensional measuring probe by the three dimensional measuring probe, and replacing the inspected chip with a new chip by a robot arm when the probe determines that the inspected chip is abnormal, and a second step for attaching a tape onto the film to close an opening of the chip receiving recess having a normal chips therein after the first step is performed.
Abstract:
There is provided a rolled steel with excellent toughness, a drawn wire rod prepared by drawing the rolled steel, and a method for manufacturing the same, in which even if a heating step is omitted, the toughness of the steel can be improved by securing a de-generated pearlite structure in an internal structure of the rolled steel by controlling a content of Mn among components and cooling conditions, and then preventing C diffusion. The rolled steel according to the present invention includes C: 0.15~0.30 %, Si: 0.1~0.2 %, Mn: 1.8~3.0 %, P: 0.035 % or less, S: 0.040 % or less, the remainder Fe, and other inevitable impurites, as a percentage of weight, in which the microstucture of the rolled steel is composed of ferrite and pearlite including cementite with 150 nm or less of thickness.
Abstract:
A neutron coincidence counter for non-destructive accounting for a nuclear material according to the present invention comprises an outer case, neutron detectors mounted in the outer case while being surrounded by a moderator, and a basket horizontally movable in the outer case so as to be exposed outside the outer case and having a cavity for receiving a sample container therein. Further, a neutron coincidence counter for non-destructive accounting for a nuclear material according to the present invention comprises an outer case, neutron detectors mounted in the outer case while being surrounded by a moderator, a basket movable in the outer case so as to be exposed outside the outer case and having a cavity for receiving a sample container therein, and an external signal analyzer connected to the detectors through an electrically conductive path. Moreover, at least one facile connector of one-touch connection type is mounted on the electrically conductive path for connecting the detectors to the external signal analyzer, resulting in free removal and replacement of wires connected to the connector.
Abstract:
The present invention relates to an apparatus and a method for inspecting external appearances of semiconductor packages, and more particularly to an in-tray apparatus for inspecting semiconductor packages to reduce the inspection time of the semiconductor packages in trays according to the semiconductor packages during the in-tray inspection and to minimize interference of shadow due to projected light beam so that efficiency and reliability are improved. The apparatus includes first and second vision probes on transfer paths of a tray accommodating semiconductor packages, and a central controller comparing image information obtained by the vision probes with reference image information about a semiconductor package in a corresponding lot to analyze and determine whether or not the semiconductor package is inferior. The first vision probe is aligned with rails on which the tray is transferred, and the second vision probe is arranged at a predetermined angle to the first vision probe.
Abstract:
The present invention relates to a method of inspecting new types semiconductor devices with other device on standby while continuing conventional lot end sorting of semiconductor devices so that inspection efficiency of an external appearance of the semiconductor device can be enhanced. The method includes determining whether the object is inferior by transferring a tray accommodating objects from a loading unit and comparing image information obtained by the vision camera with stored image information of a corresponding object, sorting and discharging the objects according to the determination, performing a lot end sorting by unloading normal objects in a buffer tray when the sorting of all objects in a corresponding lot is finished, and performing the inspection of objects in a new lot while the lot end sorting of the existing lot is performed when a predetermined signal of the objects in the new lot is inputted during the lot end sorting.
Abstract:
Provided are a method for manufacturing a high-carbon soft wire rod which omits softening treatment and a wire rod manufactured thereby, and the method comprises the steps of: austenitizing a billet including 0.7-1.5 weight% of C, 0.005-2.0 weight% of Si, 0.2-1.5 weight% of Mn, 0.03 weight% or less of Al, 0.02 weight% or less of P, 0.02 weight% or less of S, and the remaining weight percent of Fe and necessary impurities at the temperature of A3 or more; performing a finish-rolling process at A1 to A1+80°C; and cooling the rolled wire rod to A1-50°C to A1-100°C at the cooling speed of 0.03°C/s.